Question: What is the independence referendum with the most votes received?
Paraphrase: What is the autonomy submission with the foremost votes received?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q1219394 . ?ent wdt:P1111 ?obj } ORDER BY DESC(?obj)LIMIT 5 
Answer: New Caledonian independence referendum, 1987, New Caledonian independence referendum, 1987